Fluidized reduction furnace for producing high-purity vanadium trioxide and production method

The invention relates to a fluidized reduction furnace for producing high-purity vanadium trioxide, which comprises a fluidized bed reactor and a built-in heat exchange component, wherein the heat exchange component is a tube type heat exchanger, and a heat exchange tube is vertically provided with at least two layers of sieve mesh plates to form at least three layers of fluidized reaction chambers. The invention also provides a fluidized reduction method for producing the high-purity vanadium trioxide. The fluidized reduction furnace and the fluidized reduction method have the advantages that firstly, materials in each layer are in a fully-mixed state, and material flow among the layers is in a plug flow state; secondly, the multi-stage fluidized reduction conditions are provided, raw materials enter from the lowermost layer, are reduced step by step and are purified gradually, and the running stability and the operating rate of equipment are improved in a manner of reduction step by step; and thirdly, the fluidized reduction furnace can be used for producing the high-purity vanadium trioxide, and the vanadium grade is larger than 67.9 percent.